- #1
sspitz
- 21
- 0
A particle of energy E is incident from the left on a potential step. If the energy of the particle is greater than the height of the step, it is acceptable to discard:
[tex]
Fe^{-ikx}
[/tex]
saying that there is nothing incident from the right.
If E is less than the step, it is not acceptable to discard:
[tex]
Fe^{-kx}
[/tex]
When combined with time dependence, both are waves moving right to left. The only difference is that one is a sine/cose wave and the other exponential. Why does this matter to the argument?
[tex]
Fe^{-ikx}
[/tex]
saying that there is nothing incident from the right.
If E is less than the step, it is not acceptable to discard:
[tex]
Fe^{-kx}
[/tex]
When combined with time dependence, both are waves moving right to left. The only difference is that one is a sine/cose wave and the other exponential. Why does this matter to the argument?